Index: /wp-includes/functions.php
===================================================================
--- /wp-includes/functions.php	(revision 20950)
+++ /wp-includes/functions.php	(working copy)
@@ -1363,7 +1363,7 @@
 
 /**
  * Determines a writable directory for temporary files.
- * Function's preference is to WP_CONTENT_DIR followed by the return value of <code>sys_get_temp_dir()</code>, before finally defaulting to /tmp/
+ * Function's preference is the return value of <code>sys_get_temp_dir()</code>, followed by WP_CONTENT_DIR, before finally defaulting to /tmp/
  *
  * In the event that this function does not find a writable location, It may be overridden by the <code>WP_TEMP_DIR</code> constant in your <code>wp-config.php</code> file.
  *
@@ -1379,16 +1379,16 @@
 	if ( $temp )
 		return trailingslashit($temp);
 
-	$temp = WP_CONTENT_DIR . '/';
-	if ( is_dir($temp) && @is_writable($temp) )
-		return $temp;
-
 	if  ( function_exists('sys_get_temp_dir') ) {
 		$temp = sys_get_temp_dir();
 		if ( @is_writable($temp) )
 			return trailingslashit($temp);
 	}
 
+	$temp = WP_CONTENT_DIR . '/';
+	if ( is_dir($temp) && @is_writable($temp) )
+		return $temp;
+
 	$temp = ini_get('upload_tmp_dir');
 	if ( is_dir($temp) && @is_writable($temp) )
 		return trailingslashit($temp);